Distributor for separating malonic acid

Abstract

The utility model discloses a distributor for separating malonic acid, which comprises a distributor and a limit mounting rod, the bottom of the distributor is detachably provided with a filter barrel body I, the outer surface of the bottom of the filter barrel body I is fixedly connected with a connecting block I, and the thread on the inner surface of the connecting block I is in threaded connection with the thread on the outer surface of the top of a filter barrel body II. After malonic acid, an alcoholic solution and other particle impurities are separated by the distributor, the alcoholic solution and other particle impurities enter the filter barrel body I, are primarily filtered by the primary filter plate, are subjected to multi-stage filtration by the plurality of filter plates, and enter the filter barrel body II from the bottom of the mounting frame after being filtered; according to the device, an alcohol solution is effectively separated from other impurities, a plurality of separation columns, limiting mounting rods, limiting blocks and the like are arranged, the first filter plate, the second filter plate, the third filter plate, the fourth filter plate and the fifth filter plate can be conveniently taken out and disassembled, the impurities filtered out by the filter plates can be conveniently treated, the filter plates can be conveniently cleaned, and the device is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a distributor for separating malonic acid. Background Technique

[0002] Malonic acid is mainly used as a pharmaceutical intermediate, and also used in spices, adhesives, resin additives, electroplating polishing agents, etc. It is used as a complexing agent and also for the preparation of barbiturate salts. Malonic acid is an intermediate for the fungicide isoprothiolane and also an intermediate for the plant growth regulator ethephon. Malonic acid and its esters are mainly used in aspects such as spices, adhesives, resin additives, pharmaceutical intermediates, electroplating polishing agents, explosion control agents, heat welding flux additives, etc. In the pharmaceutical industry, it is used to produce luminal, barbital, vitamin B1, vitamin B2, vitamin B6, phenylbutazone, amino acids, etc. In the process of preparing malonic acid, under the action of a catalyst, the raw materials undergo a hydrolysis reaction to generate malonic acid and alcohol. Under the separation action of the distributor, malonic acid leaves the reaction section and moves downward to the lower part of the tower and finally enters the reboiler. During this process, when the reaction-generated mixed solution enters the distributor, the distributor separates malonic acid and discharges it to the reboiler. At the same time, the distributor discharges the alcohol solution and other particulate impurities. Therefore, it is necessary to preliminarily separate the reaction mixture to separate the impurities and alcohol solution from malonic acid.

[0003] In this regard, the Chinese utility model patent with the authorization announcement number CN221061927U discloses a preliminary separation device for preparing malonic acid. By allowing the reaction-generated mixed solution to enter the filter barrel from the reaction tower through the distributor, under the separation of the distributor, malonic acid, alcohol solution, and other particulate impurities are separated. Malonic acid, alcohol solution, and particulate impurities enter the upper barrel body of the filter barrel to precipitate. The alcohol solution and other particulate impurities enter the filter hopper through the primary filter box and are gradually filtered through the multi-stage filter plates of the filter hopper, and finally enter the lower barrel body from the bottom of the filter hopper, effectively separating malonic acid, alcohol solution, and other impurities in the reaction-generated mixed solution, and being able to analyze and sample the impurities filtered by each stage of filter plates in the filter hopper and the impurities in the upper barrel body to further optimize the preparation process.

[0004] This distributor device for preparing malonic acid separates malonic acid from the alcohol solution and other particulate impurities in the mixed solution and discharges malonic acid to the reboiler. The alcohol solution and other particulate impurities need to be filtered through multiple filter plates for multi-stage filtration to separate the alcohol solution from other particulate impurities. The filter plates are not convenient to disassemble for treatment.

[0005] Therefore, we propose a distributor for separating malonic acid to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a distributor for separating malonic acid to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A distributor for separating malonic acid, including a distributor and a limit mounting rod. The bottom of the distributor is detachably installed with a first filter barrel body. The outer surface of the bottom of the first filter barrel body is fixedly connected with a first connecting block. The threaded part on the inner surface of the first connecting block is threadedly connected to the threaded part on the outer surface of the top of the second filter barrel body. An opening is provided at the bottom of the first filter barrel body, and a primary filter plate is detachably installed in the opening.

[0008] A second connecting block is fixedly installed on the bottom surface of the first filter barrel body. The threaded part on the outer surface of the second connecting block is threadedly connected to the threaded part on the inner surface of the top of the installation frame. A through hole is provided at the bottom of the installation frame. Limiting grooves are respectively provided at both ends of the inner bottom surface of the installation frame. The number of the limit mounting rods is two. The bottom ends of the two limit mounting rods are respectively fixedly connected with limit blocks. The limit blocks are clamped in the limiting grooves. The top surface of the limit block contacts the first filter plate. The two ends of the top surface of the first filter plate respectively contact the first separating column. The top surface of the first separating column contacts the second filter plate. The two ends of the top surface of the second filter plate respectively contact the second separating column. The top surface of the second separating column contacts the third filter plate. The two ends of the top surface of the third filter plate respectively contact the third separating column. The top surface of the third separating column contacts the fourth filter plate. The two ends of the top surface of the fourth filter plate respectively contact the fourth separating column. The top surface of the fourth separating column contacts the fifth filter plate.

[0009] Limiting openings one are respectively provided at both ends of the top surfaces of the first filter plate, the second filter plate, the third filter plate, the fourth filter plate, and the fifth filter plate. The limiting openings one are slidably connected to the limit mounting rods. Limiting openings two are respectively provided at both ends of the top surfaces of the first separating column, the second separating column, the third separating column, and the fourth separating column. The limiting openings two are slidably connected to the limit mounting rods.

[0010] Preferably, the first filter plate, the second filter plate, the third filter plate, the fourth filter plate, and the fifth filter plate contact the inner wall of the installation frame.

[0011] Preferably, an installation groove is provided on one side of the top of the limit mounting rod. A notch is provided on one side inside the installation groove. A lifting rod contacts the notch and the inside of the installation groove.

[0012] Preferably, a first guide block is fixedly installed at the inner bottom of the first filter barrel body.

[0013] Preferably, a second guide block is fixedly installed at the inner bottom of the second filter barrel body.

[0014] Preferably, a discharge port is fixedly installed at the bottom of the second filter barrel body, and a valve is provided on the discharge port.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] After malonic acid, alcohol solution and other particulate impurities are separated by the distributor, the malonic acid enters the reboiler after being separated from the distributor. The alcohol solution and other particulate impurities enter the first filter barrel body and are preliminarily filtered through the primary filter plate, and then are multi-stage filtered through filter plate five, filter plate four, filter plate three, filter plate two, and filter plate one. After filtration, it enters the second filter barrel body from the bottom of the installation frame, effectively separating the alcohol solution from other impurities. By setting the first partition column, the second partition column, the third partition column, the fourth partition column, the limit installation rod, the limit block, etc., it is convenient to take out and disassemble filter plate one, filter plate two, filter plate three, filter plate four, and filter plate five, which is convenient for treating the impurities filtered by the filter plate, cleaning the filter plate, and convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic front sectional structural diagram of the present utility model;

[0019] Figure 3 is a schematic partial structural diagram of the present utility model;

[0020] Figure 4 is a schematic diagram of the split structure of the partial structure of the present utility model.

[0021] In the figure: 1. Distributor; 2. First filter barrel body; 3. First diversion block; 4. Primary filter plate; 5. First connection block; 6. Second filter barrel body; 7. Second diversion block; 8. Discharge port; 9. Valve; 10. Second connection block; 11. Installation frame; 111. Through hole; 112. Limit groove; 12. Limit installation rod; 121. Notch; 122. Installation groove; 13. Limit block; 14. Filter plate one; 15. First partition column; 16. Filter plate two; 17. Second partition column; 18. Filter plate three; 19. Third partition column; 20. Filter plate four; 21. Opening; 22. Fourth partition column; 23. Filter plate five; 24. First limit opening; 25. Second limit opening; 26. Lifting rod. SPECIFIC EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1:

[0024] Please refer to Figures 1-4, which is the first embodiment of the present utility model. The present utility model provides a technical solution: a distributor for separating malonic acid, including a distributor 1 and a limit mounting rod 12. A filter barrel body one 2 is detachably installed at the bottom of the distributor 1. A connecting block one 5 is fixedly connected to the outer surface of the bottom of the filter barrel body one 2. The threaded part on the inner surface of the connecting block one 5 is threadedly connected to the threaded part on the outer surface of the top of the filter barrel body two 6. An opening 21 is opened at the bottom of the filter barrel body one 2, and a primary filter plate 4 is detachably installed in the opening 21;

[0025] A connecting block two 10 is fixedly installed on the bottom surface of the filter barrel body one 2. The threaded part on the outer surface of the connecting block two 10 is threadedly connected to the threaded part on the inner surface of the top of the mounting frame 11. A through hole 111 is opened at the bottom of the mounting frame 11. Limiting grooves 112 are respectively opened at both ends of the inner bottom surface of the mounting frame 11. The number of the limit mounting rods 12 is two. Limiting blocks 13 are respectively fixedly connected to the bottom ends of the two limit mounting rods 12. The limiting blocks 13 are clamped in the limiting grooves 112. The top surface of the limiting block 13 contacts the filter plate one 14. The two ends of the top surface of the filter plate one 14 respectively contact the partition column one 15. The top surface of the partition column one 15 contacts the filter plate two 16. The two ends of the top surface of the filter plate two 16 respectively contact the partition column two 17. The top surface of the partition column two 17 contacts the filter plate three 18. The two ends of the top surface of the filter plate three 18 respectively contact the partition column three 19. The top surface of the partition column three 19 contacts the filter plate four 20. The two ends of the top surface of the filter plate four 20 respectively contact the partition column four 22. The top surface of the partition column four 22 contacts the filter plate five 23;

[0026] Limiting openings one 24 are respectively opened at both ends of the top surfaces of the filter plate one 14, the filter plate two 16, the filter plate three 18, the filter plate four 20, and the filter plate five 23. The limiting openings one 24 are slidably connected to the limit mounting rods 12. Limiting openings two 25 are respectively opened at both ends of the top surfaces of the partition column one 15, the partition column two 17, the partition column three 19, and the partition column four 22. The limiting openings two 25 are slidably connected to the limit mounting rods 12. The multiple partition columns can play a role in separating between two adjacent filter plates. During installation, the limiting openings one 24 provided on the filter plate one 14 can be slid into corresponding to the two limit mounting rods 12 to make it contact the limiting block 13. Then, the limiting openings two 25 provided on the two partition columns one 15 can be respectively snapped into corresponding to the two limit mounting rods 12. Repeat this process. After installation, the limiting blocks 13 provided at the bottom of the limit mounting rods 12 can be snapped into the limiting grooves 112 provided at both ends of the inner bottom surface of the mounting frame 11 for installation.

[0027] Embodiment 2:

[0028] Please refer to Figures 1-4 , which is the second embodiment of the present utility model. Based on the previous embodiment, the filter plate one 14, the filter plate two 16, the filter plate three 18, the filter plate four 20, and the filter plate five 23 contact the inner wall of the mounting frame 11.

[0029] On one side of the top of the limit installation rod 12, an installation groove 122 is opened. On one side inside the installation groove 122, a notch 121 is opened. The contact lifting rod 26 is inside the notch 121 and the installation groove 122. The lifting rod 26 can be correspondingly inserted into the installation groove 122 through the notch 121, and the lifting rod 26 is lifted to the top inside the installation groove 122. The two limit installation rods 12 can be lifted by hand holding the lifting rod 26, so as to drive the multiple filter plates and multiple partition columns installed on the limit installation rods 12 to move upward and be taken out.

[0030] A first diversion block 3 is fixedly installed at the inner bottom of the first filter barrel body 2, which is convenient for diversion to the opening 21.

[0031] A second diversion block 7 is fixedly installed at the inner bottom of the second filter barrel body 6, which is convenient for diverting the solution to the discharge port 8.

[0032] A discharge port 8 is fixedly installed at the bottom of the second filter barrel body 6. A valve 9 is provided on the discharge port 8. The filtered solution can be discharged through the discharge port 8 by opening the valve 9.

[0033] Embodiment 3:

[0034] Please refer to Figures 1-4 , which is the third embodiment of the present utility model. Based on the above two embodiments, when the present utility model is actually used, the reacted mixed solution is separated by the distributor 1 to separate malonic acid, alcohol solution and other particulate impurities. After being separated from the distributor 1, malonic acid enters a reboiler (not shown in the figure), and the alcohol solution and particulate impurities enter the first filter barrel body 2. After preliminary filtration by the primary filter plate 4 provided at the bottom of the first filter barrel body 2, it enters the fifth filter plate 23, fourth filter plate 20, third filter plate 18, second filter plate 16, and first filter plate 14 provided in the installation frame 11 through the opening 21 provided at the bottom of the first filter barrel body 2 for step-by-step multi-stage filtration, and finally enters the second filter barrel body 6 through the through hole 111 provided at the bottom of the installation frame 11, effectively separating the alcohol solution from other impurities. When it is necessary to disassemble each stage of the filter plate, the second filter barrel body 6 is unscrewed and disassembled from the first connecting block 5, the installation frame 11 is unscrewed and disassembled from the second connecting block 10, the lifting rod 26 is inserted into the notch 121 provided corresponding to the two limit installation rods 12, and then the lifting rod 26 is lifted to the top inside the installation groove 122. The limit installation rod 12 and the multiple filter plates and partition columns installed on the limit installation rod 12 can be taken out by hand holding the lifting rod 26. Then, each filter plate and partition column can be taken out and disassembled from the limit installation rod 12 one by one, which is convenient for treating the impurities filtered by the filter plate, convenient for cleaning the filter plate, and convenient for use.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A distributor for separating malonic acid, comprising a distributor (1) and a position limiting mounting rod (12), characterized in that: The distributor (1) has a filter barrel body (2) detachably mounted at the bottom, a connection block (5) fixedly connected to the bottom outer surface of the filter barrel body (2), a threaded portion of the inner surface of the connection block (5) being threadedly connected to a threaded portion of the top outer surface of the filter barrel body (6), an opening (21) being provided at the bottom of the filter barrel body (2), a primary filter plate (4) being detachably mounted in the opening (21); The bottom surface of the filter barrel body (2) is fixedly mounted with a connecting block (10); the threaded portion of the outer surface of the connecting block (10) is threadedly connected to the threaded portion of the top inner surface of the mounting frame (11); a through hole (111) is provided at the bottom of the mounting frame (11); limiting grooves (112) are respectively provided at both ends of the inner bottom surface of the mounting frame (11); the number of the limiting mounting rods (12) is two; the bottom ends of the two limiting mounting rods (12) are respectively fixedly connected with limiting blocks (13); the limiting blocks (13) are clamped in the limiting grooves (112); the top surface of the limiting block (13) contacts the filter plate (14) ), the two ends of the top surface of the filter plate one (14) are respectively in contact with the partition column one (15), the top surface of the partition column one (15) is in contact with the filter plate two (16), the two ends of the top surface of the filter plate two (16) are respectively in contact with the partition column two (17), the top surface of the partition column two (17) is in contact with the filter plate three (18), the two ends of the top surface of the filter plate three (18) are respectively in contact with the partition column three (19), the top surface of the partition column three (19) is in contact with the filter plate four (20), the two ends of the top surface of the filter plate four (20) are respectively in contact with the partition column four (22), the top surface of the partition column four (22) is in contact with the filter plate five (23); The filter plate 1 (14), the filter plate 2 (16), the filter plate 3 (18), the filter plate 4 (20) and the filter plate 5 (23) are respectively provided with a limiting opening 1 (24) at both ends of the top surface, and the limiting opening 1 (24) is slidably connected to the limiting mounting rod (12); the separating column 1 (15), the separating column 2 (17), the separating column 3 (19) and the separating column 4 (22) are respectively provided with a limiting opening 2 (25) at both ends of the top surface, and the limiting opening 2 (25) is slidably connected to the limiting mounting rod (12).

2. A distributor for separation of malonic acid according to claim 1, characterized in that: The filter plate one (14), the filter plate two (16), the filter plate three (18), the filter plate four (20), and the filter plate five (23) contact the inner wall of the mounting frame (11).

3. A distributor for separation of malonic acid according to claim 1, characterized in that: A mounting groove (122) is provided on one side of the top of the position-limiting mounting rod (12), a notch (121) is provided on one side of the mounting groove (122), and the notch (121) and the mounting groove (122) contact the lifting rod (26).

4. A distributor for separation of malonic acid according to claim 1, characterized in that: A guide block (3) is fixedly installed on the bottom of the filter barrel body (2).

5. A distributor for separation of malonic acid according to claim 1, characterized in that: A guide block 2 (7) is fixedly installed at the bottom of the second filter barrel body (6).

6. A distributor for separation of malonic acid according to claim 1, characterized in that: A discharge port (8) is fixedly installed at the bottom of the second filter barrel body (6), and a valve (9) is provided on the discharge port (8).

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